Datasheet

7
LTC1090
1090fc
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Supply Current vs Supply Voltage
Supply Current vs Temperature Reference Current vs Temperature
Unadjusted Offset Error vs
Reference Voltage
Linearity Error vs Reference
Voltage
Change in Gain Error vs
Reference Voltage
Offset Error vs Supply Voltage Linearity Error vs Supply Voltage
Change in Gain Error vs Supply
Voltage
SUPPLY VOLTAGE, V
CC
(V)
4
0
OFFSET ERROR (LSBs)
0.25
0.5
0.75
1.0
1.25
5
678
LTC1090 • TPC07
910
V
REF
= 4V
ACLK = 2MHz
V
OS
= 1.25mV AT V
CC
= 5V
SUPPLY VOLTAGE, V
CC
(V)
4
0
LINEARITY ERROR (LSBs)
0.25
0.5
0.75
1.0
1.25
5
678
LTC1090 • TPC08
910
V
REF
= 4V
ACLK = 2MHz
SUPPLY VOLTAGE, V
CC
(V)
4
CHANGE IN GAIN ERROR (LSBs)
– 0.5
– 0.25
0
0.25
0.5
5
678
LTC1090 • TPC09
910
V
REF
= 4V
ACLK = 2MHz
SUPPLY VOLTAGE, V
CC
(V)
4
0
SUPPLY CURRENT, I
CC
(mA)
1
2
3
4
6
5
678
LTC1090 • TPC01
910
5
REF
+
OPEN
ACLK = 2MHz
CS = V
CC
T
A
= 25°C
AMBIENT TEMPERATURE, T
A
(°C)
–50
SUPPLY CURRENT, I
CC
(mA)
1.0
1.2
1.4
25 75
LTC1090 • TPC02
0.8
0.6
–25 0
50 100 125
0.4
0.2
REF
+
OPEN
ACLK = 2MHz
CS = 5V
V
CC
= 5V
AMBIENT TEMPERATURE, T
A
(°C)
–50
REFERENCE CURRENT, I
REF
(mA)
0.4
0.5
0.6
25 75
LTC1090 • TPC03
0.3
0.2
–25 0
50 100 125
0.1
0
V
REF
= 5V
REFERENCE VOLTAGE, V
REF
(V)
0.2
0
OFFSET ERROR (LSBs = • V
REF
)
2
4
6
8
1.0 5.0
LTC1090 • TPC04
10
1
3
5
7
9
1
1024
V
OS
= 0.5mV
V
OS
= 1mV
V
CC
= 5V
1
1024
REFERENCE VOLTAGE, V
REF
(V)
0
LINEARITY ERROR (LSBs = • V
REF
)
0.75
1.0
1.25
4
LTC1090 • TPC05
0.5
0.25
0
1
2
3
5
V
CC
= 5V
1
1024
REFERENCE VOLTAGE, V
REF
(V)
0
CHANGE IN GAIN ERROR (LSBs = • V
REF
)
0.75
1.0
1.25
4
LTC1090 • TPC06
0.5
0.25
0
1
2
3
5
V
CC
= 5V